Warping apparatus



Aug. 29, 1950 R. P. DRAKE WARPING APPARATUS 3 Sheets-Sheet 1 Filed March 29, 946

INVENTOR. Russel/ P .Dra/re 2 fdu- 6%.; lam/4,42

ATTORNEYS Aug. 29, 1950 R. P; DRAKE 2,520,135

WARPING APPARATUS Filed March 29, 1946 3 Sheets-Sheet 2 INVENTOR. Russell P. .Dra/fe ATTORNEYS Aug. 29, 1950 R. P. DRAKE 2,520,135

WARPING APPARATUS 3 Sheets-Sheet 3 Filed March 29, 1946 Patented Aug. 29, 1950 WARPING APPARATUS Russell P. :Drakafialedonia, Ill., assignor to Barber--Colmanompany, Rockford, Ill.,.a corpora- .tion oflllinois Application MarhiZB, 1946,.Sefial N0. 658,247

9-.Glai-ms. 1

The invention relates to warping apparatus-of the type in which warn from a substantial number :of yarn massesiare 'WOIIIldOHtO a single relative'ly large container; aand theiinvention has particular reference to warpers for winding :ray'on and other-filament:yarn upona.warp beam driven at highispeed rby trictional contact between the warp 'on the beam and aidriving drum.

.In warpingrayon and the like, it necessary in order to avoid :injury to the filament to minimize the pressure :between the beam and the drum. It '"has been found, however, that when the driving pressure is reduced sufiiciently to avoid injury to the filament, it is insufficient to bring the 'warp beam to a stop quickly when the driving drum is-broug'htto rest :through'th'eroper ation of the usual br-ake mechanism. Accordingly, the warp :beam "continues :to rotate after stoppage of the :drum with a resulting skidding or :sliding of the cdelicatefilament upon the:surface of the drum. This has been found highly objectionable because of the injury ?to the dilament threads, weakening them nor subsequent operations or fraying the same :so :as to produce ends which :show up in the weaving.

The primary object of the :present invention is to :provide 'zwatping apparatus including a warper having'brake mechanismpperativeito istop simultaneously both "the driving drum and the warp beam.

further (object is -to provide a :brake mechanismforrthewarp beam utilizing theibeam heads as the braking :surfaces and :so constructed and arranged as :not to interfere with tthe :placement of the beam upon :its supporting .ineans and its removal therefrom.

..Another object is .to provide :a beam brake mechanism comprising brake-shoes supported for movement toward an'd irom ithe :beam heads and also capable of pivotal movement with ithebeam as the latter moves upwardly :during-the winding operation.

.A'further objectis .to provide -a brake mech= anism of the character last above vindicated in which thepivotal brake'fihoes'iare maintained in uniformly spaced relation to their respective heads 'during the normal operation.

.Theobjects of the invention thus generally zset forth, together with other and ancillary advantages, are attained by the construction and warrangement shown :by way of illustration in the accompanying drawings, in which:

vFigure 1 is a fragmentary-sideclevational view of ianwarping apparatus including a warper, creel and :control mechanism itherefor, the *warper be '2 ing equipped with brake mechanism constructed in accordance with my invention.

Fig. 2 is a fragmentary horizontal sectional view taken approximately in the .plane .of line 22 of Fig. '1.

Fig. 3 is .an enlarged vertical :sectional view taken approximately in therplane of line 3--3 of Fig. -2 and showing the beam brake mechanism with the brakes applied.

Fig. 4 21s a fragmentary .detail view on anenlarged scale. of'a part shown iniFig. A, but-showing the brakes off.

5 is .a fragmentary plan view of thesame with a supporting bracket shown in section.

Referring :fiISt to Big. l of thedraw-ings, Lhave shown my invention as applied to warping apparatuscomprising a warper 1, having means for rotatably supportingawarp beam 8 upon which a multiplicity of filament threads :9 are to f=be wound-simultaneously. The filament threads -being wound are :supplied from a creel 1:0 supporting a multiplicity of packages or cheeses M, two only-herein being shown. .Qperativelyassocia-t'ed with each of the cheeses supported "on the creellis a drop :wzire iii-responsive to the breakage of filament thread and operative to 001111101181 reset mechanism I3 so as to :interrupt :th'epperation of thewarper.

:As (in conventional practice, the warp beam is rotatably "supported upon a pair ;of :pivoted :arms I 4, the yarn being awound upon a :central cylindrical :core 15 ib'ettsieen circular :end plates or heads 46. Qpera-tively associated "with the supporting *Zr-IIIS 4-14 .215 .a let on mechanism generally designated 1 1.10.1 controlling the driving pressure between the yarn mass 011 the "Warp beam and a driving drum 4:8. She let .vofi .mechanism 111, whichiis of conventional construction, is capable of adjustment to vary the degree ofidriviing {creas sure between the :beam and the drum.

The zdrivermec'ihanisin for the warper :is of the general character disclosed in :P'GtBISOil Patent No. .:l,672;4'70, dated June ;5, .1928. In brief, :it comprises a :main .drive shaft is driven iromzan electric motor .2 B through the medium-of :a clutch 2.1., theshaft =19 iha-ving aidr iving connection with the :drum .comprising :a spur :gear train generally designatedl-Z. ":Iihe-chitchzi is arranged for -en gagernentzand disengagement by the operationl a rockshait :23 under the control or the :reset mechanism and coincidentally with the ;disengagement aof the iclntch 21 a rbrake :24 -is en gaged :to :stop .the drum.

'The .control shaft 23 tends :to zrock in 5-2. clockwise direction 15315;. 1') under the :action of *a 3 contractile spring but is normally restrained from such rocking movement by a detent means forming part of the reset mechanism IS. The shaft 23 has rigid therewith an arm 26 connected by a link 2? with one arm of a bell crank 28 of the reset mechanism. Another arm of the bell crank is normally supported by a detent 29 arranged for actuation by a solenoid 36 when the latter is deenergized under the control of any one of the drop wires in response to the breakage of a filament thread. When the solenoid is energized, the bell crank and its connected rockshaft 23 are released for operation by the force of the spring 25. In the ensuing rocking movement of the shaft 23, the clutch 2! is disengaged and the brake 24 engaged in the general manner set forth in said Peterson Patent No. 1,672,470. It will be understood that the reset mechanism per se forms no part of the present invention. For a more complete disclosure thereof, attention is directed to Peterson et al. Patent No. 2,172,850, dated September 12, 1939.

The present invention contemplates the pro vision of a brake mechanism for stopping the warp beam coincidentally with the stoppage of the driving drum. To this end I have provided an auxiliary brake mechanism together with means for controlling the sameconcurrently with the control of the d;um brake mechanism. This beam brake mechanism is especially constructed so as not to interfere with the removal or replacement of the warp beam, and at the same time it is adapted for uniform operation notwithstanding the fact that the warp beam moves gradually upward in the growth of the yarn mass on the beam.

Referring now to Figs. 2 and 3, the beam brake is supported by the machine frame and in the preferred embodiment comprises a pair of brake shoes 3| respectively associated with the opposite beam heads I6. The brake shoes are carried by two slides 33 mounted for movement toward and from the warp beam, and are so supported as to be capable of swinging to compensate for the changing positions of the beam as the windin proceeds. As shown, the shoes are pivoted to ex tensions 32 of the slides.

Each slide 33 is composed in the present instance of a pair of bars 34 (Fig. 3) connected by bolts 35 with spacers 36 and 31 therebetween. In the present instance, the slides are mounted for sliding movement upon a pair of transverse parallel rods 38 and 39 fixedly supported in the warper frame, the former serving to support the beam arms [4. Secured to these rods on opposite sides of the slides ale suitable guide members 28 (Fig. 2) engaging with the opposite sides of the slides to guide the latter in their movement toward and from the brake beam.

The slides 33 are urged toward the brake beam so as to carry the brake shoes 3| into engagement with the beam heads l6, by spring means comprising in the present instance a plur-alty of coiled tension sp;ings 4| (Fig. 3) suitably anchored to an adjustable stationary plate 42 and connected to a depending arm 43 at the rear end of the slide. Movement of the slides toward the beam is normally restrained by the detent means of the reset mechanism I3. For this purpose, the control shaft 23 is operatively connected with a parallel rockshaft 44 having arms 45 at opposite ends connected with respective slides 33. The rockshaft 44 is connected with the shaft 23 through the medium of a pair of arms 46 and 4! (Figs. 1 and 2) respectively rigid with the shafts 44 and 23 and connected by a link 48; and the connection between the arms 45 and the respective slides is accomplished by means of pins 49 on the free ends of the arms 45 and arranged to move into engagement with the ends of the slides remote from the beam (Fig. 3) when the slides are released.

When the reset mechanism I3 is operated to stop the warping apparatus, as for example when a filament thread being wound breaks so as to release its drop wire, the solenoid 3D is deenergized so as to Withdraw detent 29 from supporting relation to the bell crank 28, thereby releasing the control shaft 23 to the action of spring 25. In addition to effecting disengagement of the clutch and application of the brake for the winding drum as above set forth, such rotation of shaft 23 is transmitted to rockshaft 44 and its arms 45 so as to release the slides 33 to the action of their respective spring means 4|. It will be observed that the pins 49 are received relatively loosely within the rear ends of the slides 33 so as to permit application of the brake shoes notwithstanding considerable variations in the size of the beam heads IS.

The brake shoes 3| are preferabl supported clear of the peripheral surfaces of the beam heads l6 during the normal winding operation, thereby avoiding undue wear upon the coacting brake surfaces and preventing bouncing movement of the brake shoes toward and from the drum. For this purpose, I provide a support for each brake shoe comprising, in the present instance, a stop pin 53 supported by the beam arm 14 and engageable with the shoe during the normal winding operation so as to hold the shoe clear of the beam head. In this connection, it will be seen that the center of gravity of the shoe is such as to cause the upper end of the shoe to tilt forwardly, and the lower end rearwardly against th stop pin 50.

The stop 50 is supported from the beam arm by means of a depending bracket 5|, and in the preferred construction the sto is so suppo"ted as to be capable of yielding. Thus it is carried by a bifurcated member 52 straddling the bracket 5! and conne ted thereto by means of a pivot pin 53. The pin 50 is rigid with the free end of the member 52 and the end portion of the bracket 5| received between the parts of the member 52 is shaped so as to permit movement of the member in one direction but to form a stop surface 54 preventing movement in t e other direction. A coiled contrac i e spring 55 connectng the pin .53 with a stationary pin 56 on the beam arm permit yielding of the pins when the beam arms I4 are swung upwardly while the brake shoes reman stationary. This occurs in the operation of d fflng a beam, while the beam is suspended by other means.

As shown in Fig.

rod 33 constituting the pivotal axis of the beam arms I4. Accordingly, as the yarn mass being wound increases in diameter, the postion of each brake shoe with respect to the beam arm changes the brake shoes 3| are pivotally supported at a point forwardly of the asses es constantly? Iii-order tomeL-intai-hthhrake shoes uniformly spaced from the'beam heads, thejprorooting. members 5'? of the'bra-ke shoes are anpropriately shaped as shown. in :Fig. 3-2so "as to fijrrm rounded cam surfaces 5-7-11 for'coaction with the :pins as in various 'relati-veipositions "ofithe parts.

I claim as my inventioni 1 n -warper having, incombination, trame, a; iving 'Idrum, meanssupporting in operative association with the drum .2. warper beamihaving a member rigid therewith forming an annular braking surface, a brake shoe for coaction with said member, a slide pivotally supporting the brake shoe and mounted on said frame for movement toward the beam, said brake shoe tending to swing by gravity toward said member, and means holding the brake shoe out of engagement with said member during the normal operation of the warper.

2. A warper having, in combination, a driving drum, means supporting in operative association with the drum a warper beam having a member rigid therewith forming an annular braking surface, a brake shoe for coaction with said member, a slide pivotally supporting the brake shoe and mounted for movement toward the beam, said brake shoe tending to swing by gravity toward said member, and means holding the brake shoe out of engagement with said member during the normal operation of the warper comprising a stop movable in a d rection away from the beam, and a spring acting on said stop, said brake shoe being engageable with said stop so as to be supported thereby through said spring.

3. A warper having, in combination, a driving drum, means supporting in operative association with the drum a warp beam having heads at opposite ends, said supporting means including a pair of pivotal arms, brake means for stopping rotation of the warp beam including a pair of pivotally supported brake shoes tending to swing toward said heads, and means normally supporting the brake shoes out of engagement with the beam heads during normal operation of the warper comprising stops carried by the beam arms for coaction with respective ones of the brake shoes.

4. A warper having, in combination, a driving drum, means supporting in operative association with the drum a warp beam having heads at opposite ends, said supporting means including a pair of pivotal arms, brake means for stopping rotation of the warp beam including a pa r of pivotally supported brake shoes tending to swing toward said heads, and cam means for controlling the position of the brake shoes in relation to the respective beam heads in various positions of the beam arms.

5. A warper having, in combination, a driving drum, means supporting in operative association with the drum a warp beam having circular heads at opposite ends, said supporting means including a pair of pivotally supported arms, brake means for stopping the beam comprising a shoe for coaction with one of said heads, a slide pivotally supporting the brake shoe and mounted for movement toward and from the beam, the shoe being pivotally supported on an axis d sposed between the beam head and the pivotal support for the arm, means for actuatin the slide to cause the brake shoe to engage its beam head, and means normally supporting the brake shoe against rocking movement with respect to the beam head comprisinga stop member carried by th'e beam arm and a cam member on the braheshoe for coaction with "said stop member.

6.- Awarper having, in 'combin'atiom a driving drum, means supporting in operative association wi'ih the-iirum a war-p beam having circular heads at-opposite ends, said supporting means including'a-pair of pivotally supported arms, brake means for stopping the beam comprising a shoe for coaction with -'one-of-=sa-id heads, a slide pivotazllusupporting thebralrevsh'oe-and' mounted for movement toward and from the beamf thezshofe being pivotally supported on an axis disposed between the beam ead and the pivotal support for the arm, means for actuating the slide to cause the brake shoe to engage its beam head, and means normally supporting the brake shoe against rocking movement with respect to the beam head comprising a stop member carried by the beam arm and a cam member on the brake shoe for coacfion with said stop member, said stop member being supported for movement a direction away from the beam head and a spring action upon said stop member to hold yieldaloly against movement under the weight of the brake shoe.

7. A warper having, in combination, a frame, a driving drum, means supporting in operative association with the drum a warp beam having opposite beam heads, and a brake mechanism for interrupting rotation of the beam comprising a slide mounted on said frame for movement toward from the beam, a brake shoe pivotally mounted on the slide for coaction with one of said beam heads, spring means for actuating the slide, and means releasably holding the slide against movement by said springs including a control shaft operatively associated with the slide, spring means for rocking said control shaft and i detent means for releasably holding said control shaft against movement.

8. A warper having, in combination, a driving drum mounted for rotation on a horizontal axis, means supporting in operative association with the a warp beam having a beam head rigid therewith and formiir annular braking surface, a brake shoe for coaction with said surface, the means for supporting the warp beam comprising a pair of arms mounted to swing on a horizontal axis disposed at one side of the beam in laterally spaced relation thereto, a slide mounted for movement toward and from the earn at one side thereof, said brake shoe being pivoted to the slide at a point between the beam and the of said supporting arms. the pivotal axis of the brake shoe being disposed so as to cause the brake shoe to swing by gravity toward said beam head, means normally operative to hold the sl de and therefore the brake shoe in retracted relation with respect to the beam head but re easable to permit application of the brake shoe to the head, and means on one of said arms operative in the retracted posit on of the slide to hold the brake shoe against pivotal movement into engagement with the beam head.

9. A warping apparatus comprising in combination, a driving drum, means supporting in operative ss-ociation with said drum and on an axis parallel thereto a warp beam having a brake member rigid therewith and providing an annular braking surface, a brake shoe, a support for said shoe mounted for movement toward and from said annular braking surface, spring means urging said support in a direction to carry the shoe against said surface, means releasably holdingthe support against movement by said spring means, said shoe being also supported for pivotal movement, and means automatically controlling the position of the shoe in relation to said braking surface so as to hold the shoe out of engagement with the surface in various positions of the warp beam relative to the driving drum.

RUSSELL P. DRAKE.

REFERENCES CITED The following references are of record in the file of this patent:

Number Number 8 UNITED STATES PATENTS Name Date Coleman Dec. 5, 1916 Trevett et al Feb. 24, 1931 Bruenn May 21, 1935 Wiggermann Jan. 19, 1943 FOREIGN PATENTS Country Date Great Britain Feb. 13, 1930 Germany Aug. 30, 1938 

